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ME60 V800R010C10SPC500 Configuration Guide - LAN Access and MAN Access 01

This is ME60 V800R010C10SPC500 Configuration Guide - LAN Access and MAN Access

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Associating an Eth-Trunk Interface in Static LACP Mode with a Unicast VRRP Backup Group

Associating an Eth-Trunk Interface in Static LACP Mode with a Unicast VRRP Backup Group

When non-Huawei devices are connected to Huawei devices through Eth-Trunk interfaces, configure a unicast VRRP backup group on the Huawei devices to implement redundancy. To ensure reliable service transmission, associate the Eth-Trunk interfaces in static LACP mode with the unicast VRRP backup group. If the unicast VRRP backup group status changes, the associated Eth-Trunk interfaces can quickly detect the status change and immediately perform traffic switching.

Usage Scenario

On the network shown in Figure 4-12, NPE1 and NPE2 are non-Huawei devices, and PE1 and PE2 are Huawei devices. NPE1 and NPE2 are respectively connected to PE1 and PE2 through Eth-Trunk links. A unicast VRRP backup group is configured on PE1 and PE2 with PE1 functioning as the master device and PE2 functioning as the backup device.

The unicast VRRP backup group monitors the status of PE1 and PE2 and interfaces on PE1 and PE2. If the user-side interface on PE1 fails, NPE1 can rapidly perform a master/backup link switchover on the user side using its own security function. This ensures reliable service transmission. However, NPE1 is unaware of the status change of the unicast VRRP backup group in the following conditions and will continue forwarding traffic along the original faulty link, causing a traffic interruption.

  • A fault occurs on the network-side interface on PE1.
  • The priorities of PE1 (master) and PE2 (backup) in the unicast VRRP backup group are manually changed.

To prevent traffic interruptions, associate the Eth-Trunk interfaces in static LACP with the unicast VRRP backup group. If the status of the unicast VRRP backup group changes from master to backup, the associated Eth-Trunk interface on the master device can quickly detect the status change. In this way, NPE1 connected to the Eth-Trunk interface can detect that a fault occurs and promptly performs a master/backup link switchover using its own security function, thereby ensuring proper traffic transmission.

Figure 4-12 Associating an Eth-Trunk interface in static LACP mode with a unicast VRRP backup group
NOTE:

A unicast VRRP backup group applies to a Layer 3 network, whereas a common VRRP backup group applies to a Layer 2 network. This is because a common VRRP backup group is a multicast VRRP backup group and sends only multicast VRRP Advertisement packets within a broadcast domain, such as a VLAN or a VSI.

For detailed information about a unicast VRRP backup group, see Unicast VRRP.

Pre-configuration Tasks

Before associating an Eth-Trunk interface in static LACP mode with a unicast VRRP backup group, complete the following tasks:

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface eth-trunk trunk-id

    The view of the Eth-Trunk interface in static LACP mode is displayed.

  3. Run lacp track vrrp vrid vrid interface loopback loopback-number

    The Eth-Trunk interface in static LACP mode is associated with a unicast VRRP backup group.

    A unicast VRRP backup group can be created only on loopback interfaces.

  4. Run commit

    The configuration is committed.

Checking the Configurations

After associating an Eth-Trunk interface in static LACP mode with a VRRP backup group, check the configurations.

Run the display vrrp command to view the status and type of the VRRP backup group as well as the types, numbers, and status of the Eth-Trunk member interfaces that are tracked by the VRRP backup group.

<HUAWEI> display vrrp
GigabitEthernet3/0/1 | Virtual Router 1
State             : Master
Virtual IP        : 10.10.1.111
Master IP         : 10.10.1.1
PriorityRun       : 180
PriorityConfig    : 200
MasterPriority    : 210
Preempt           : YES                     Delay Time : 0s
TimerRun          : 1s
TimerConfig       : 1s
Auth Type         : NONE
Virtual MAC       : 0000-5e00-0101
Check TTL         : YES
Config Type       : normal-vrrp
Backup-forward    : disabled
Track IF          : GigabitEthernet3/0/2    Priority Reduced :20
IF State          : DOWN
Track BFD         : 1                Priority Reduced :20
BFD-Session State : UP
Create Time         : 2011-12-29 05:41:23
Last Change Time    : 2011-12-29 05:41:33

Follow-up Procedure

Configure a unicast VRRP backup group on PE1 and PE2 to monitor the status of a member interface of the Eth-Trunk interfaces in static LACP mode. As shown in the preceding figure in which PE1 functions as the master device and PE2 functions as the backup device, if a member interface of the Eth-Trunk interface on PE1 fails, the unicast VRRP backup group immediately performs a master/backup switchover after detecting that the member interface status has changed. For configuration details, see Configuring a VRRP Backup Group to Track the Status of Member Interfaces of an Eth-Trunk Interface in Static LACP Mode.

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Updated: 2019-01-04

Document ID: EDOC1100059440

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